February 1, 2007 Via U.S. Mail and Facsimile K. Paul Singh Chief Executive Officer Primus Telecommunications, Incorporated 7901 Jones Branch Road Suite 900 McLean, VA RE: Primus Telecommunications Group, Incorporated Form 10-K for the fiscal year ended December 31, 2005 File No. 0-29092 Dear Mr. Singh: We have limited our review of your Form 10-K for the fiscal year ended December 31, 2005, to disclosures relating to your contacts with countries that have been identified as state sponsors of terrorism. Our review with respect to this issue does not preclude further review by the Assistant Director group with respect to other issues. At this juncture, we are asking you to provide us with supplemental information, so that we may better understand your disclosure. Please be as detailed as necessary in your response. After reviewing this information, we may raise additional comments. Please understand that the purpose of our review process is to assist you in your compliance with the applicable disclosure requirements and to enhance the overall disclosure in your filings. We look forward to working with you in these respects. We welcome any questions you may have about our comments or on any other aspect of our review. Feel free to call us at the telephone numbers listed at the end of this letter. General - 1. We note that you list on your website rates for your Primus Prepaid Phone Card including rates for Cuba, Iran, North Korea, Sudan and Syria. These countries are identified as state sponsors of terrorism by the U.S. State Department and are subject to U.S. economic sanctions and controls. Please describe your current, past and anticipated operations in and contacts with these countries, whether directly or through subsidiaries or affiliated entities or other indirect arrangements, and discuss their materiality to you in light of the countries` status as state sponsors of terrorism. Please also discuss whether the contacts and operations, individually or in the aggregate, constitute a material investment risk to your security holders. 2. Your materiality analysis should address materiality in quantitative terms, including the approximate dollar amount of revenues, assets and liabilities associated with Cuba, Iran, North Korea, Sudan and Syria. Please also address materiality in terms of qualitative factors that a reasonable investor would deem important in making an investment decision, including the potential impact of corporate activities upon a company`s reputation and share value. We note, for example, that Arizona and Louisiana have adopted legislation that requires their state retirement systems to prepare reports regarding state pension fund assets invested in, and/or permits divestment of state pension fund assets from, companies that do business with U.S.-designated state sponsors of terrorism. Pennsylvania`s General Assembly has passed a resolution mandating assessment and reporting of state pension fund assets invested in companies that do business with certain U.S.-designated state sponsors of terrorism. Florida requires issuers to disclose in their prospectuses any business contacts with Cuba or persons located in Cuba. Connecticut, Illinois, Maine, New Jersey and Oregon have adopted legislation requiring reporting of interests in, or divestment from, companies that do business with Sudan, and similar legislation has been proposed by several other states. Finally, Harvard University, Yale University, Stanford University, and other educational institutions have adopted policies prohibiting investment in, and/or requiring divestment from, companies that do business with Sudan. Your materiality analysis should address the potential impact of the investor sentiment evidenced by such actions directed toward companies that have operations associated with Cuba, Iran, North Korea, Sudan and Syria. Closing Comments Please respond to this comment within 10 business days or tell us when you will provide us with a response. Please submit your response letter on EDGAR. We urge all persons who are responsible for the accuracy and adequacy of the disclosure in the filings to be certain that the filings include all information required under the Exchange Act of 1934 and that they have provided all information investors require for an informed investment decision. Since the company and its management are in possession of all facts relating to the company`s disclosure, they are responsible for the accuracy and adequacy of the disclosures they have made. In connection with responding to our comment, please provide, in writing, a statement from the company acknowledging that: the company is responsible for the adequacy and accuracy of the disclosure in the filings; staff comments or changes to disclosure in response to staff comments do not foreclose the Commission from taking any action with respect to the filings; and the company may not assert staff comments as a defense in any proceeding initiated by the Commission or any person under the federal securities laws of the United States. In addition, please be advised that the Division of Enforcement has access to all information you provide to the staff of the Division of Corporation Finance in our review of your filings or in response to our comments on your filings. Please understand that we may have additional comments after we review your response to our comment. Please contact Jack Guggenheim at (202) 551-3523 if you have any questions about the comment or our review. You may also contact me at (202) 551-3470. Sincerely, Cecilia D. Blye, Chief Office of Global Security Risk cc: Larry Spirgel Division of Corporation Finance K. Paul Singh Primus Telecommunications, Incorporated February 1, 2007 Page 1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549-5546 DIVISION OF CORPORATION FINANCE